1993 Oldsmobile Achieva Owner's Manual - Page 136

Your Driving and the Road ISTOP X4025 STOP DO NOT ENTER WRONG WAY RR ADVANCE CROSSING NARROW BRIDGE NO PASSING ZONE Yellow indicates a general warning. Slow down and be careful when you see Red means Stop. It may also indicate a yellow sign. Itmay signal a railroad H Road Signs that some movement is not allowed. crossing ahead, a no passing zone, or Not The road signs you see everywhere are Examples are Do Enter and Wrong some other potentially dangerous Way. coded by color, shape and symbols. It's situation. Likewise, a yellow solid line a good idea to know these codes so that painted on the road means Don't Cross. you can quickly grasp the basic meaning or intent of the sign even before you have a chance to read it. Color of Road Signs HOSPITAL INFORMATION Green is used to guide the driver. Green Blue signs with white letters show motorists' services. signs may indicate upcoming freeway exits or show the directionyou should turn to reach a particular place.